JP2000096626A - Operation pattern changeover device for construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation pattern changeover device of a construction machine, allowing an operator to easily change an operation pattern without moving from an operator's cab. SOLUTION: This device includes an operating lever 3, actuators actuated to match the control direction of the operating lever 3, and a control pattern selector valve 35 capable of varying the relationship between the operating lever 3 and each actuator whenever necessary. In that case, the control pattern selector valve 35 is placed in the vicinity of an operator's seat 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a hydraulic shovel or the like,
The present invention relates to an operation pattern switching device provided in a construction machine.

[0002]

2. Description of the Related Art An example of a conventional shovel will be described below with reference to FIG. In FIG. 4, 3
0 is a hydraulic shovel, and this hydraulic shovel 30
It has a lower traveling body 31 having a pair of traveling motors for driving the excavator 30 to travel. An upper swing body 32 is mounted on the upper part of the lower traveling body 31 so as to be freely swingable by driving a swing motor. This upper rotating body 32
Has a driver's cab 33 at the front left side thereof. The operator cab 33 includes an operator seat disposed in the rear portion of the operator cab 33, a pair of operation levers disposed on both sides of the operator seat, and a pair of travel levers disposed in front of the operator seat. Have. A control valve 34 and an operation pattern switching valve 35 are provided in the cover 40 on the center right side of the upper swing body 32. The operation pattern switching valve 35 is provided with a lever 41 for switching an operation pattern. The control valve 34 and the operation lever are connected by a pipe via an operation pattern switching valve 35. Further, the control valve 34 and the traveling lever are connected by a pipe.

At the center of the front part of the upper swing body 32, an attachment 36 comprising a boom 37, an arm 38 and a bucket 39 is mounted. Both ends of the boom 37 are connected to the front of the upper
And a pair of boom cylinders 37a connected thereto. The arm 38 is connected to the end of the boom 37. This arm 38
Is rotatable by an arm cylinder 38a disposed between the back surface of the boom 37 and the end of the arm 38. Further, the bucket 39 is attached to the tip of the arm 38. This bucket 39
Is rotatable by a bucket cylinder (not shown) arranged between the bucket 39 and the back of the arm 38.

[0004] An operator sits on the operator seat, controls the control valve 34 by operating the travel lever, and supplies hydraulic oil of a hydraulic pump to the travel motor to move the hydraulic excavator 30. The operation of the operation lever controls the control valve 34 to supply the hydraulic oil of the hydraulic pump to the swing motor, to swing the upper swing body 32, and to rotate the boom cylinder 37a, the arm cylinder 38a, and the bucket. By operating the attachment 36 by supplying hydraulic oil to the cylinder, operations such as excavation are performed.

[0005] The operation pattern switching valve 35 is operated by the operator himself / herself to switch the lever 41 to a desired operation pattern, as shown in Japanese Utility Model Publication No. 22482/1990, for example. The switching can be easily performed. This is necessary because the manufacture of the hydraulic excavator is performed by a plurality of manufacturers, and each of the plurality of manufacturers employs a unique operation pattern. That is, the correspondence between the operation direction of the operation lever described above and the swing motor, the boom cylinder 37a, the arm cylinder 38a, and the bucket cylinder operated by the operation lever differs for each manufacturer. This is because, when operating with the operation pattern, the operation cannot be performed smoothly due to inexperience, the work efficiency is reduced, and an accident may occur due to an operation error.

[0006]

In the above-described hydraulic excavator 30, a control valve 34 and an operation pattern switching valve 35 are provided side by side for ease of maintenance and the like. For this reason, switching of the operation pattern switching valve 35 has been performed as follows. That is, the operator
Once seated on the operator seat in the operator cab 33, the operating direction of the operating lever and the correspondence between the swing motor, the boom cylinder 37a, the arm cylinder 38a, and the bucket cylinder operated by the operating lever are checked, and the operating pattern is If the operation pattern is other than the desired operation pattern, the operator moves away from the operator's cab 33, moves to the right side of the excavator to open the cover 40, and operates the operation pattern switching valve 35 by switching the lever 41. After the operation pattern was switched to the operation pattern described above, the operator moved to the cab 33 again. However, the movement between the cab 33 and the operation pattern switching valve 35 is very troublesome for the operator.

The present invention has been made in view of such circumstances, and has as its object to provide an operation pattern switching device for a construction machine in which an operator can easily switch operation patterns without moving from a cab. Aim.

[0008]

According to a first aspect of the present invention, there is provided an operation lever, each actuator operated in conjunction with an operation direction of the operation lever, and a correspondence relationship between the operation lever and each actuator. An operation pattern switching device for a construction machine having an operation pattern switching valve that can be appropriately changed, wherein the operation pattern switching valve is disposed near an operator seat.

According to this, since the operator can switch the operation pattern switching valve to a desired operation pattern without moving from the operator seat and sitting down, there is no fear that the work efficiency of the operator is reduced.

According to a second aspect of the present invention, in the operation pattern switching device for a construction machine according to the first aspect, the operation pattern switching valve is disposed in a space under the floor of the operator's seat. Things.

[0011] According to this, since the operation pattern switching valve does not protrude into the cab, the comfort of the operator is not hindered.

According to a third aspect of the present invention, in the operation pattern switching device for a construction machine according to the second aspect, the operation pattern switching valve disposed under the floor is suspended from a floor surface. Things.

In this case, since the operation pattern switching valve can be arranged close to the floor, the distance between the operation pattern switching valve and the operator can be reduced, and the operator can switch the operation pattern switching valve more easily. be able to.

According to a fourth aspect of the present invention, in the operation pattern switching device for a construction machine according to the first aspect, the operation pattern switching valve is disposed below a seat surface of an operator seat. It is.

In this case, since the operation pattern switching valve does not protrude into the cab, the comfort of the operator is not hindered.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to a cab perspective view shown in FIG. Note that components having the same configuration as the conventional technology are denoted by the same reference numerals.

In FIG. 1, reference numeral 1 denotes an operator seat accommodated in a driver's cab. A pair of control boxes 2 provided with operating devices are arranged on both sides of the operator seat 1. A pair of operation levers 3 are arranged on the front upper surfaces of the pair of control boxes 2. Also, in front of the operator seat 1,
A pair of traveling levers 4 are arranged. The operation lever 3 and the travel lever 4 control a hydraulic actuator represented by a swing motor, a boom cylinder, an arm cylinder, a bucket cylinder, and a pair of travel motors.

An openable and closable plate 6 is arranged on the floor 5 below the foot between the operator seat 1 and the travel lever 4. An operation pattern switching valve 35 having a lever 41 for switching an operation pattern is arranged in a space below the plate 6.

FIGS. 2 and 3 are views showing the state of attachment of the operation pattern switching valve 35. FIG. Specifically, FIG. 2 is a front view of the operation pattern switching valve, which is a view as viewed in the direction of arrow A in FIG.
FIG. 3 is a mounting side view of the operation pattern switching valve, as viewed from the arrow B in FIG. 1.

2 and 3, reference numeral 35 denotes an operation pattern switching valve having the above-described lever 41. The operation pattern switching valve 35 is located below the plate 6 so that the operation pattern switching valve 35 One surface 35a and the floor 5 are suspended by brackets 7a and 7b, and the other surface 35b and the floor 5 are suspended by the bracket 8. Thereby, the mounting position of the operation pattern switching valve 35 can be made closer to the floor 5, so that the distance to the operator can be reduced and switching can be easily performed.

An operator sits on the operator seat 1 and operates the pair of operation levers 3 so that the operation direction of the operation levers and the rotation motor, the boom cylinder, the arm cylinder, and the bucket cylinder operated by the operation levers are controlled. The correspondence is confirmed, and if the operation pattern is an operation pattern other than the desired operation pattern,
The plate 6 is opened and the operation pattern switching valve 35 is opened.
After operating the lever 41 to switch to a desired operation pattern and closing the plate 6, operations such as excavation are started.

In this embodiment, an example in which the operation pattern switching valve 35 is disposed under the floor under the feet of the operator seat 1 is shown. However, the present invention is not limited to this. For example, a space may be provided below the seating surface of the operator seat 1. May be provided and arranged. Even in this case, when switching to the desired operation pattern, the operator can switch by simply reaching for the operation pattern switching valve while sitting on the operator seat.

[0023]

According to the first aspect of the present invention, the operator can switch the operation pattern switching valve to a desired operation pattern while sitting down without moving from the operator seat. There is no worry about dropping.

According to the second aspect of the present invention, since the operation pattern switching valve does not protrude into the cab,
It does not hinder the habitability of the operator.

According to the third aspect of the present invention, since the operation pattern switching valve can be arranged close to the floor, the distance between the operation pattern switching valve and the operator can be reduced, and the operator can more easily operate. The operation pattern switching valve can be switched.

According to the fourth aspect of the present invention, since the operation pattern switching valve does not protrude into the cab,
It does not hinder the habitability of the operator.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cab of a construction machine according to the present invention.

FIG. 2 is a front view illustrating the operation of the operation pattern switching valve, as viewed from the direction of arrow A in FIG. 1;

FIG. 3 is a side view of the operation pattern switching valve, as viewed in the direction of arrow B in FIG. 1;

FIG. 4 is a plan view showing a conventional hydraulic excavator.

[Explanation of symbols]

 1: Operator seat 3: Operation lever 5: Floor 7a, 7b: Bracket 8: Bracket 35: Operation pattern switching valve

Claims (4)

[Claims] 1. A construction comprising an operation lever, actuators operated in conjunction with the operation direction of the operation lever, and an operation pattern switching valve capable of appropriately changing the correspondence between the operation lever and each actuator. An operation pattern switching device for a construction machine, wherein the operation pattern switching valve is disposed near an operator seat. 2. The operation pattern switching device for a construction machine according to claim 1, wherein the operation pattern switching valve is disposed in a space under the floor of a foot of an operator seat. 3. The operation pattern switching device for a construction machine according to claim 2, wherein the operation pattern switching valve disposed under the floor is suspended from a floor surface. 4. The operation pattern switching device according to claim 1, wherein the operation pattern switching valve is disposed below a seat surface of an operator seat.